Tool for bending pipe.



H. E. HAEMER & W. M. WYLLIE.

TOOL FOR BENDING PIPE.

uruonron mum 001210, 1911.

1,026,353. Patented May 14, 1912.

' armarand J/vii" woes a COLUMBIA PLANoaRAvN 20., WASHINGTON. m s.

UNITED STATES PATENT OFFICE.

HARRY E. HARMER AND WILLIAM M. WYLLIE, OF CALGARY, ALBERTA, CANADA.

TOOL FOR BENDING- PIPE.

To all whom it may concern:

Be it known that we, HARRY E. HARMER and lVILLIAM M. VVYLLIE, subjectsof the King of England, residing at Calgary, in the Province of Albertaand Dominion of Canada, have invented certain new and usefulImprovements in Tools for Bending Pipe, of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to new and useful improvements in pipe bendersand more particularly to that class of benders used to bend conduit forelectrical purposes.

Another object of the invention is to provide a device of this characterwhich will possess advantages in points of efficiency, durability, isinexpensive of manufacture and at the same time is simple inconstruction and operation.

With the above and other objects in view the invention consists in thenovel features of construction and the combination and arrangement ofparts hereinafter described, pointed out in the claim and shown in theaccompanying drawings in which,

Figure l is a side elevation of our device showing the method of use;Fig. 2 is an end view. Fig. 3 is a longitudinal sectional View, and Fig.4 is a sectional View on the line e1-4 of Fig. 2.

Referring to the drawings 1 indicates the sectional clamp comprising thetwo members 2 and 3 hinged together by means of the knuckles 4 formed oneach of the members and a bolt 5 passing therethrough. Each section isprovided with a semicircular groove 6, which, when the two sections areclosed forms a circular opening as shown in Fig. 2. Hinged to the freeedge of one of the sections is a locking member 7, said locking memberbeing hinged to the section 2 by means of the knuckle 8 and the bolt 9passing therethrough. The locking member 7 is provided with alongitudinal groove 10 adapted to receive the projecting flange 11formed on the free edge of the section 3. Formed integral with thesection 2 is a socket 12 having its interior threaded as shown at- 13and suitable handle 14 is threaded into said socket so that the clampcan be easily handled. The concave face of the groove 6 is cut away atits ends as shown at 15 to form a depression gradually widencopies ofthis patent may be obtained for Specification of Letters Patent.

Application filed October 16, 1911.

Patented May 14, 1912. Serial No. 654,884.

ing at its outer end. It will be seen that by having the depressionformed in each end of the groove 6 of the section 2 the pipe when bentwill tend to bend circularly instead of angularly thereby the pipe canbe curved as much as is desired.

The operation of our improved pipe bender will be fully understood fromthe following description taken in connection with Fig. 1. The clamp islocked upon the pipe at the point where the pipe is to be bent and theoperator places his foot on the pipe at point A to hold the same firmly,the operator then grasps the handle and pulls toward him bending thepipe as much as he desires.

While we have shown and described the preferred form of our invention itwill be obvious that various changes in the details of construction andin the proportions may be resorted to for successfully carrying ourinvention into practice without sacrificing any of the novel features ordeparting from the scope thereof.

Having thus described the invention, we claim:

A pipe bender comprising two hingedly connected clamping members, saidmembers having semi-circular grooves formed in their inner face, theconcave face of one of said grooves being cut away at its ends to formdepressions gradually widening at their outer ends, a locking memberhinged to the outer edge of one of said clamping members and extendinglongitudinally the full length thereof, said locking member having alongitudinal groove formed therein, the other of said clamping membershaving anoutwardly extending flange formed on its free edge and adaptedto be disposed in the groove in the first clamping member, a threadedsocket formed on the exterior of one of said clamping members, and ahandle threaded into said socket to manipulate said clamping member.

In testimony whereof we hereunto affix our signatures in the presence oftwo witnesses.

HARRY E. HARMER. WM. M. WYLLIE.

Witnesses:

C. MONTROSE WRIGHT, L. F. BnA'mIu.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

